Mare

The Mare is most powerful in the dark. According to the journal, "A Mare is the source of all nightmares, making it more aggressive in the dark. The ghost also attempts to turn off the lights to empower itself."

Abilities
Mares are more active when the lights are off. Because of this, most people make sure to turn the lights on so the Mare is less likely to hunt. The Mare might be more likely to turn the breaker off, so it's best to make sure you know where the breaker is at all times.

The Mare's weakness are lights being turned on.

Evidence

 * EMF level 5
 * Spirit Box
 * Ghost Orbs